<template>
    <div class="role">
        <!-- 面包屑导航区 -->
      <el-breadcrumb separator="|">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>角色管理</el-breadcrumb-item>
        <el-breadcrumb-item>角色列表</el-breadcrumb-item>
      </el-breadcrumb>
      <!-- 卡片视图 -->
      <el-card>
          <!-- 添加角色按钮区 -->
         <el-row>
             <el-col>
                 <el-button type="primary">添加角色</el-button>
             </el-col>
         </el-row>
         <!-- 角色列表区 -->
         <el-table :data="rolesList" border stripe>
             <!-- 展开列 -->
              <el-table-column type="expand">
                  <template slot-scope="scope">
                      <el-row :class="['bdbottom',i1===0?'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                          <!-- 渲染一级权限 -->
                          <el-col span='5'>
                              <el-tag closable @close='removeById(scope.row,item1.id)'>{{item1.authName}}</el-tag>
                              <i class="el-icon-caret-right"></i>
                         </el-col>
                          <!-- 渲染二级和三级权限 -->
                          <el-col span='19'>
                              <!-- 通过 for循环 嵌套渲染二级权限-->
                              <el-row :class="[i2===0?'':'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key='item2.id' >
                                  <el-col span='6'>
                                      <el-tag type='success' closable @close='removeById(scope.row,item2.id)'>{{item2.authName}}</el-tag>
                                      <i class="el-icon-caret-right"></i>
                                  </el-col>
                                  <el-col span='18'>
                                       <el-tag type='warning' v-for="(item3,i3) in item2.children" :key='item3.id'   closable @close='removeById(scope.row,item3.id)'>{{item2.authName}}</el-tag>
                                  </el-col>
                              </el-row>
                          </el-col>
                      </el-row>
                      <!-- <pre> {{scope.row}}</pre> -->
                     
                  </template>
              </el-table-column>
             <!-- 索引列 -->
             <el-table-column type="index"></el-table-column>
            <el-table-column label='角色名称' prop='roleName'></el-table-column>
            <el-table-column label='角色描述' prop='roleDesc'></el-table-column>
            <el-table-column label='操作' width="300px">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
                    <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
                    <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDiolog(scope.row)">分配权限</el-button>
                </template>
            </el-table-column>
         </el-table>
      </el-card>
      <!-- 分配权显的对话框 -->
      <el-dialog
            title="分配权限"
            :visible.sync="setRightDialogVisible"
            width="50%"
            @close="setRightDialogClosed"
           >
           <!-- 树形控件 -->
           <el-tree :data=" rightsList" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defkeys" ref="treeRef"></el-tree>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRightDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="allotRights">确 定</el-button>
            </span>
    </el-dialog>
    </div>
</template>
<script>
export default {
    name:'roles',
    data(){
        return{
            // 所有角色列表数据
            rolesList:[],
            // 控制分配权限对话框的显示与隐藏
            setRightDialogVisible:false,
            // 所有权限的数据
            rightsList:[],
            // 树形控件的属性绑定对象
            treeProps:{
                label:'authName',
                children:'children'
            },
            // 默认选中的节点id值数组
            defkeys:[],
            // 即将分配权限的ID
            roleId:''
        }
    },
    created(){
        this.getRolesList();
    },
    methods:{
        // 获取所有数据的列表
       async getRolesList(){
           const {data:res} = await this.$http.get('roles')
           if(res.meta.status!==200){
               return this.$message.error('获取角色列表失败')
           }
        //    this.$message.success('获取角色列表成功')
           this.rolesList = res.data;
           console.log(res.data)
       },
    //    根据id删除对应的权限
      async removeById(role,rightId){
        //   弹框提示是否删除
     const  res= await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if(res!=='confirm'){
            return this.$message.info('取消删除')
        }
      const {data:result} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if(result.meta.status!==200){
          return this.$message.error('删除权限失败')
      }
    //    this.getRolesList();
    role.children=result.data;
        this.$message.success('删除成功')
        },
        // 展示分配权限的对话框
       async showSetRightDiolog(role){
            // 获取所有权限的数据
            this.roleId=role.id;
          const {data:res1}  = await this.$http.get('rights/tree')
          if(res1.meta.status!==200){
              return this.$message.error('获取权限数据失败')
          }
        //   获取到的权限的数据保存到data中
    this.rightsList=res1.data;
    // console.log(res1.data);
    // 递归获取三级节点
    this.getLeafkeys(role,this.defkeys)
            this.setRightDialogVisible=true
        },
        // 通过递归的形式，获取角色下所有三级权限的id,并保存到defkeys数组中
        getLeafkeys(node,arr){
            // 如果当前node 节点不包含children 属性，则是三级节点
            if(!node.children){
                return arr.push(node.id)
            }
            node.children.forEach(item=>{
                this.getLeafkeys(item,arr)
            }
            )
        },
        // 监听分配权限对话框的关闭事件
        setRightDialogClosed(){
            console.log(this.defkeys);
            this.defkeys=[]
            
        },
        // 点击为角色分配权限
       async allotRights(){
            const keys = [ 
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()
                ];
            const idStr = keys.join(',')
         const {data:res2} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
                // console.log(res2);
                if(res2.meta.status!==200){
                    return this.$message.errpr('分配数据失败')
                }
                this.$message.success('分配数据成功')
                  this.getRolesList();
                  this.setRightDialogVisible=false
            
        }
    }
}
</script>
<style lang="less" scoped>
.el-tag{
    margin:7px;
}
.bdtop{
    border-top:1px solid #eee;
}
.bdbottom{
    border-bottom:1px solid #eee;
}
.vcenter{
    display: flex;
    align-items: center;
}
</style>